First Assistant Monmouth County Prosecutor Christopher Gramiccioni says the FBI and U.S. Marshals are among several agencies now involved in the search for 27-year-old Arthur Morgan III of Ocean Township.
Morgan also was added this weekend as a featured fugitive on the "America's Most Wanted" television show's website.
Authorities believe Morgan fled the state and may have headed out West after Tierra Morgan-Glover was killed Monday, after he picked her up for a court-approved visit.
The toddler was still strapped in her car seat when she was found partially submerged in a creek at Shark River Park in Wall, N.J. The cause of death was listed as "homicidal violence."